Rotary safety-razor.



G. B. UGLLINS.

ROTARY SAFETY RAZOR.

APPLICATION FILED HAYS, 1914.

2 SHBETSSHEET 1.

Patented Feb. 9, 1915.

G. B. COLLINS.

ROTARY SAFETY RAZOR.

APPLICATION FILED MAY 9, 1914.

Patented Feb. 9, 1915.

2 SHBETSSHEET 2.

12a Q/ha UNITED STATES PATENT OFFICE.

CAP BEBL'IBAND COLLINS, OF DES MOINES, IOWA.

ROTARY SAFETY -RAZOB.

ful Improvements in Rotary Safety-Razors,

of which the following is a specification.

. This invention relates to improvements in rotary safety razors, andone of the objects of the same is to provide an improved selfcontainedmotor propelled device of this character having a rotary circular blade.

.-A further object is to provide an improved device of this characterhaving a blade of disk shape provided with a continuous non-serratedcutting edge, and a guard for the blade.

A further object is to provide improved means for controlling theoperation of the blade.

To the attainment of these ends, and the accomplishment of other new anduseful objects as will appear, the invention consists in the features ofnovelty'in substantially the construction, combination and arrangementof the several parts hereinafter more fully described and claimed andshown in the accompanying drawings illustrating the invention, and inwhich Figure 1 is a top plan view of an improved device of thischaracter, constructed in accordance with the principles of thisinvention. Fig. 2 is a side elevation of Fig. 1. Fig. 3 is a sectionalview taken on line 3-3, Fig. 2. Fig. 4 is a sectional view taken on line4--4, Fig. 5. Fig. 5. is a vertical sectional view taken on line 55.Fig. 2. Fig. 6 is a sectional view taken on line 6-6, Fig. 5.

Referring more particularly to the drawings and in the presentexemplification of this invention, the numeral 10 designates generally acasing or housing of any desired size and configuration, preferably of asize and shape to fit the hand and by means of which the device may bemanipulated.

The housing is preferably constructed in sections and connected with onesection by means of a reduced portion 11 is a guard 12, of circularconfiguration having sfiaced peripheral teeth. The guard is s aped toform a recess or chamber 13 for a purpose r'to be hereinafter set forthand the reduced portion 11 between the guard and the casing is tubularfor the reception of a hollow shaft 14. Passing through the hollow shaft14,

specification of letters Patent.

Patented Feb. 9, 191 5 Application filed m a, 1914. Serial No. 837.415.

which extends beyond the guard and, i

wheel or element 18, that is ,adaptedto. r05 tate with the shaft 15. oThe cutting blade 19 is in the. form of a disk and is connected to theshaft.1 5. to.

rotate therewith preferably through theme-I dium of the element 18,which latter; may be provided with a. stud 20 adapted .toenter a recessin the blade, and the blade together with the element 18 are secured tothe shaft 2'."

15 preferably by means of a nut or collar.

21 which has a threaded engagement with,

the extremity of the shaft 15 and serves to clamp the blade between theelement-21 and the element 18. Obviously the blade 19 is of a diameterslightly less than the diam.

eter of the guard.

Arranged within the casing 10 is a spring barrel 22 which is mountedloosely upon the:

hollow shaft 14, the latter being mounted loosely upon the shaft 15.Inclosed with '2':

the spring barrel 22 is a spring 23 which is:

anchored as at 24 to the hollow. shaft 14 and is also anchored as at 25to the barrel 2:2.

A portion of this barrelis shaped to I form an internal toothed gear 26with which v I a pinion 27 meshes and which pinion is connected with agear 28 for rotation therewith, the latter being journaled upon a stub.

shaft 29 preferably supported by. one of I the members of the casing.Connected with the shaft 15, to rotate therewith isa gem 30 which mesheswith the gear 28 and connected with the gear 30 to rotate therewith is agear 31. the latter meshing with a gear 32 which is connected with a fanor governor 33, the fan or governor and the gear 32 being rotatablymountedupon a'stub shaft 34 also connected with one of the sections of,the

casing'10. Connected with the shaft 14 for rotation therewith is aratchet element 35 V and mounted upon a support 36. carried by the othersection of the casing 10 is a dog or pawl 37 which cooperates with theratchet element 35. The sections of the casing 10 are preferablyremovably secured together by means of a threaded connection 38. so asto permit ready access to the interior of the casing.

In use. the spring 23 is wound by holding one hand against the blade andthe fastening device 21 hold it against rotation, and then rotating thecasing 10 by the other hand. This will cause, the spring 23 to be wound,and the pawl and ratchet elements V 5 .35, 37mwil-l 'lock' them againstretrograde -As the; spring 23 unwinds, the

- circular motor casing, said casing constituting a housing, a stemprojecting from and 65 movement. "springbarrel. andthe, gear'26 willbe.-- tated, and this in turn will rotate the pinion "37 and the gear28, and the gear 28 mesh- 10 ing'with the gear 30. which is secured tothe shaft 15, will rotate the blade 19, the dem the [casing 10. Theunwinding movement offthespring is retarded by the governor 33 i\vhichis connected with the ge r 31 through themedium of the pinion 2 .7Thus it will be manifest that while the blade is being rotated, the usermay manipulate the razor in the manner in which all safety razors areoperated, thereby giving a shearing action to the blade, as well as theordinary move ment which will be imparted to the blade by thehand of theoperator.

In order to control the rotation of the blade, a stop device is providedwhichco operates with the toothed element 18. This stop devicepreferably comprises a shiftable member 39 provided with an annularcentral portion 40 which surrounds the outside of the recess 13 of theguard, and the extremities of the annular member are extended as at il,l2 and are provided with projections 43, 44. The annular portion 40 V isrovided with 'a tooth or projection 45 which is adapted to be moved intoand out of engagement with the teeth of the element 18, and the shiftingdevice may be supported by means of pin'and slot connections 46, 47.Thus when it is desired to permit the spring 40 to rotate the blade, thestop device is shifted by the finger of the operator by engaging'theprojection 43 to move the projection out of engagement with the teeth ofthe elementIS, and when it is desired to stop 45 the blade, the deviceis shifted in the opposite direction by the finger of the operatorvi'c'efbeing held in the hand by means of a Moe bination and arrangementof the several parts without departing from the spirit 'of thisinvention.

. What 1s claimed asnew is 1. Aself-contained deviceof the characterdescribed, embodying a substantially flat arranged perpendicularly toone of the walls of the casing, a guard connected with the stem anddisposed adjacent the casing, a driving shaft extending from the casingand through the said stem, a blade detachably connected with the shaftand disposed adjacent the guard, a stop device adjustably supported bythe guard, said stem provided with a lateral opening therethroughadjacent the guard, a portion of'said stop device projecting throughsaid opening, and 1 means on the shaft with which the said portion ofthe stop device coo erates.

2. A self contained razor. o the character described, embodying a motorpropelled '80 rotatable disk shaped blade, a guard for T the cuttingedge of-the blade, said guard having a chamber therein, an elementdisposed within the chainber, and rotatable with the blade, and meanscooperating with the said element for controlling the operation of themotor.

3. A self contained razor of-the character described, embodying a motorpropelled rotatableidisk shaped blade, a guard for the cuttingedge ofthe blade, said guard having a chamber therein, a rotatable toothedeleinent disposed within the chamber and connected with the motor, andan element shiftable into andout of engagement with the toothed elementfor controllingthe motor.

i. A self contained razor-of the character described, embodying a motorpropelled rotatable disk shaped blade, a guard for the cutting edge ofthe blade, said'guard having a chamber thereimn rotatable ele-' mentdisposed within the chamber, and connected with the motor, and anelement supported by the said guard, and movable into and out ofoperative relation with the said 105 element for controlling theoperation of the motor.

In witnesswhereof, I hereunto subscribe mv name to this specification inthe, presence of two witnesses.

' GAP BERTRAND COLLINS. Witnesses: WM. BREYETI'E,

P. A. S. SMITH.

